I am trying to build a small plugin host for Mac OS to be used for plugin testing, but have run into problems. I can scan for VST plugins in a directory, create instances, and editors, but I cant get the VST editor to paint correctly. It looks like the editor is painted once, but then it instantly goes all white. Turning a knob, if you can find one, helps and paints the knob correctly for some plugins and in some cases the whole thing is painted. Calling the editor component’s repaint method does nothing.
I get similar problems with the PluginHost example project. Using the git version of juce seems to make the problem less severe and some plugins paint correctly, but not all.